<?php
/*
 * Copyright (c) 2013 Eugene Kuzmenko
 *
 * Permission  is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in  the Software without restriction, including without limitation the rights
 * to  use,  copy,  modify,  merge, publish, distribute, sublicense, and/or sell
 * copies  of  the  Software,  and  to  permit  persons  to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The  above  copyright  notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE  IS  PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED,  INCLUDING  BUT  NOT  LIMITED  TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS  FOR  A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS  OR  COPYRIGHT  HOLDERS  BE  LIABLE  FOR  ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 * For more information, see <http://www.aljey.com>.
 */

use Al\Core\Lib\Service;

/**
 * Allows to reference external resources relative to a particular plugin from
 * within a smarty template.
 *
 * @author Eugene Kuzmenko <mail@aljey.com>
 */
class Smarty_Resource_Al extends Smarty_Resource_Custom {

  /**
   * @inheritDoc
   * 
   * @param string $name A colon separated resource name
   *                     (eg. 'al://Acme\Blog::layout.html.smarty').
   *                     @see Template::findTemplate()
   * @param string $source The content of a resource.
   * @param int $mtime The time the resource file was last modified.
   */
  protected function fetch($name, &$source, &$mtime) {
    if (($tpl = Service::get('template')->findTemplate($name))) {
      $source = file_get_contents($tpl);
      $mtime = filemtime($tpl);
    } else {
      $source = null;
      $mtime = null;
    }
  }
  
  /** @inheritDoc */
  public function populate(Smarty_Template_Source $source,
    Smarty_Internal_Template $template=null) {
    $source->filepath = $source->type . ':' . $source->name;
    $source->uid = sha1($source->filepath);
    $this->fetch($source->name, $content, $timestamp);
    $source->timestamp = isset($timestamp) ? $timestamp : false;
    if(isset($content)) {
      $source->content = $content;
    }
    $source->exists = !!$source->timestamp;
  }

}